Hydropower station optimized operation control method and system

Abstract

The invention relates to a hydropower station optimized operation control method and system. The hydropower station optimized operation control method comprises the steps that a curve of a water head, the guide vane opening angle and the unit output is obtained, and the water head corresponds to a hydropower station unit, and a constant flow model or a constant load model is built according to the curve of the water head, the guide vane opening angle and the unit output; the constant flow model or the constant load model is solved so as to obtain a unit work control scheme; and operation of a hydropower station is controlled according to the control scheme. According to the hydropower station optimized operation control method, the actual curve of the water head, the guide vane opening angle and the unit output is obtained through in-situ experimental operation, and the mathematic model is built according to the curve, so that the obtained control scheme can meet the in-situ unit characteristics better; accordingly, the error is reduced, optimized operation of the hydropower station is achieved, and the guide vane opening angle, the unit output and other data can be used through data in existing unit automation control systems; and the cost is low, and the software cost and the hardware cost do not need to be additionally increased.

Description

technical field [0001] The invention relates to the field of unit control of a hydropower station, in particular to a method and system for optimal operation control of a hydropower station. Background technique [0002] The economic optimization operation of the hydropower station is mainly to ensure the stable operation of the power station unit in the high efficiency area. That is to study the optimal number, combination and start-stop sequence of working units in the hydropower station under given conditions, and the optimal distribution of load among units. [0003] The existing economic optimization operation in the hydropower plant is mainly based on the hydro turbine model test data provided by the manufacturer to convert and draw the dynamic characteristic curve of the unit section, construct a constant flow or constant load optimization mathematical model, and use traditional algorithms such as dynamic programming or equal micro-increase rate or Artificial intelli...

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Problems solved by technology

The current meter method can easily measure the flow velocity value of each measuring point of the water passing section, but the workload of the early installation and later data processing is large, and the labor cost investment is high; the volute differential pressure method is simple to operate but difficult to calibrate the flow coefficient It is difficult to guarantee; the ultrasonic flow measurement method can directly measure the flow rate, and it is easy to install and operate, but the real-time measurement of the flow rate by a fixed-installed ultrasonic flowmeter requires high equipment costs. Therefore, it is difficult to measure the flow rate in the characteristic curve in real time and the cost is high

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